package com.cd.lession;

public class Cat02 {

	public static void main(String[] args) {
		// TODO monkey 
		int t=1;
		int a=1; 
		
		while(t<10) {
			a=(a+1)*2;
			t++;
		}
		System.out.println(a);
		
		
		
		
	}

}
